Comparative Study Of Outer Halos Of Planetary Nebula NGC 246, NGC 1501, And NGC 2022

Details Comparative Study Of Outer Halos Of Planetary Nebula NGC 246, NGC 1501, And NGC 2022 Comparative Study Of Outer Halos Of Planetary Nebula NGC 246, NGC 1501, And NGC 2022

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21923904a&link_type=abstract

American Astronomical Society, AAS Meeting #219, #239.04

Astronomy and Astrophysics

Astronomy

Scientific paper

A number of planetary nebulae exhibit multiple shell structures, including concentric outer halos. Three such nebulae have been studied by obtaining deep images in [O III] to identify linkages between structures observed in the inner nebula and structures found in the outer halos. Three different planetaries were studied - NGC 246, 1501, and 2022, and all exhibit similar morphologies, suggesting similar evolutionary pathways. Of note are jet structures that appear to extend through all of the shell/halo layers, implying that the layers were ejected before the jets. Data were obtained on the 0.9m WIYN telescope at Kitt Peak National Observatory and the 1.52m Kuiper Telescope of the University of Arizona Steward Observatory. This work was supported in part by the Wisconsin Space Grant Consortium and a private bequest from Ms. Linda Staubitz.

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